Straight flow volume control register



w. T. TRUAX 1,924,263

STRAIGHT FLOW VOLUME CONTROL REGISTER Filed Jul 30, 1932 2 Sheets-Sheet 1 Jig 3536 Aug. 29, 1933.

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FWFWFWE 7 "8 III 7a 6 /A /2 mfiiia J15 'llL m MILJLLQIg Patented Aug 29, "1933 "omen ims This invention relates to straight flowvolur'ne control warm air registers or ventilators, and .belongs to thattype of devices for the passage of air in which the 'flowi is at all timespracetically directed in a straight course, asit leaves the register. In registers of: this type the vanes are arranged to assumewhen closed positions inclined one to another. 'When the vanes are fully open they are. parallel, .and when they are -1.0' partly open they converge and the airis caused to flow out straight v from the openinglbetween the vanes whatsoever the width" or the opening -may be. The width. of the opening betweenthe vanes obviously controls the volume of the flow.

- The present invention Consists .of a special construction and combinationjof parts for, the purpose stated, and the formation preferred and the arrangement. thereof are illustrated in the accompanying drawings; Fig. 1' represents a cross section of the frameland vanes fashioned in accordance with this invention and sets forth the parts'assembled and in closed position. Fig. 2 is a similar sectional view showing the "vanes in open position. Fig. 3 is asection of "one corher of thejrame. Fig.4jis affront view of the upper portion of the reticulated iace pla'tejof the register with a portion broken'away to show .the top plate and pivots of theivanes; Fig.5 is a front view of the lower' portion of the register plate with partthereof broken away to disclose the operating members for the vanes. Fig 6 is a sectional view on brokenline 6 56 of Fig.4. Fig.7. is a sectional view on broken line 7,7.oiFig. 2. l. Throughout the descriptionfandldrawings the same number is used to refer tothe same part.

It'will be understood thatthis invention is not limitedtofany special size or to thepreciseforms of the parts employed, and it is "immaterial whether 'the v,vanes'l are arranged vertically or horizontally, or upon what side of theyregister theoperatingmembers arellocated. V

that which is Considering the draw ng termed the frame in this description is" composed of the sheet metal members 1 and 2 connected together in any chosen manner to make a box like rectangular enclosure for the vanes and other elements. At the ;bottom as best a front flange 3" as illustrated, and at the top is a likeplate 4. These parts will be again referred to. g

. The vanes are designated each asa whole by the numbers 5 and 5a. As shown in-Figs.'5 and closed engages the endof a fellow of vane" 5 as pivot pins. Vane 5 is'turned by means of a pin arecess .27 at. the left, and when the slide has been moved to openthe vanes, the recess 2'7 engages afstop 28.formedin or upon the r'nove shown in Fig. '7 is the movement plate 3 having 7, the operating member 15a threaded keyshait I 6; so located a to be reaehee by a suitable key,

,notshown, through thjregister front. Linkplates '7 and flag pivotally, engage a threaded block 8. on the keyshaft. Those parts rest upon the frame member 1. A sliding plate 9 lies mov-,

ably upon the 'rnovernentiplate and will be again mentioned. e i I Reference. number 10 designates one oi any number of reenforcing bars for the frame con- 'nected with the 'frame member 1 as; best shown in Fig; 6. The partm'arked liis a cylindricaljwasher as illustrated in .Fig lfi supporting the outer. end

of the link plate "i and movable upon the :frame member o The reticulated register'front 12, which may be ofany selected designgis secured by. screws 13 .and 14 to theflanges 3 and 4' of the move- V ment plate3 and the top plates.

,As bestdelineated in Fig.1 the vane si a s a lower flange 15, and .an' end lip 16. The lip 16, when the vanes areclosed engages the side of vane 5a. fThe'vane' Sajhasaflange l'l'and a lower lip lafwhich lip hen'tIieQvanes are illustrated. The vvane 5 has apivot pin 19,and

the slide9 has a lengthwise slot. 20 arranged in engagement with the pivot pin 19; so that the slide may move to the left hand as illustrated while engaging the pin. The vane 5a has a. vpivot pin 21, and the slide has the engaging slot 22. .It will be noted in Figs 5 and '1 that. the pivot pins are fastto the movement plate- 3, and, therefore, the vanes turn slightly on the 23 carried by" the slide 9, and as the vaneis 3 turned the pin -23 moves. with respectfto the longitudinal slot 24 in the lower flange 15 of the V vane. The vane 50, has towards its lower endin Fig. 1 a vane turning pin 25 earned by the slide 9 and in engagement with the slot 26 in "the flange 1 7 of the vane. "It will be further observed in Fig. lthat the slide 9 has aright angle ment plate, andthe endof the slide Qmarked 29 moves into proximity with. the frame member 2. In practice it is customary to stiffen the member 2 by-an inwardly pressedbead 3'0. The portions of vane 5 designatedby'the' reference number 31 in Figs. '1, 2 and 7 are slightly raised ends of the flange 15, so that when the vanes are closed the raised part '31 will pass overthe 110 ing upwardly through the movement plate.

connecting end of the adjacent and oppositely inclined vane.

As best represented in Fig. --2 the link plate,-

7 has a pivot pin 32 connecting the link plate with block 8, and a pin 33 pivotally couples the link plate :7 and slide .9. Link ;plate '7 has its endmovably supported upon the frame member. 1 as stated and as illustratedin Fig.5., As the pin 33'must move to the left through the movement platev3, the slot 34 is formed in that plate The second link plate 7a is pivoted to the block 8 onits lower side, and has a'pivot pin 35 passslide 9,must move to the left, {the upper end of the pin 35 is headed inythe movement plate 3 flush with the surface of the plate; "Thelink plate "7 is spaced from frame m andacerried' movably thereon by the cylinder washer 11, and

the corresponding end of the linkfip'late la. is pivotally spaced from. the movement plate 3 by a .second cylindrical washer 36. 'lThe'pin 35 is headed fin both .the frame member '1 :and the I movementplate '3 as shown inFig. .4, and "holds the washer 316 against displacement at the same {time allowing the end of the linkj plate /170 turn uponv the pin.

s In Figs. Land 6 is illustratedone of any numfiber and form of springs 37 acting against the frame member 1 and upon the topplate 4, so

that the :vanes or louvers are held .inplace.

piyotally atthe top on the top pivot pins '38.

Inassembling the parts, take the movement- ,plate 3, the key shaft 6, the link plates 7 and 7a, and the slide "9 and put'them in place. .The cylinder washers 1.1 and 36 are also prop- I e'rly placed, and all the'vanes or 'louvers arranged to .standup on the pins. Next take the top plate 4 and enter the pins in the holes of the .louvers. Now, the workman can lift :the whole assembly and set it in theframe, and the springs will hold itfin place. The ends .of the re-enforcing 'barslO ,are' next. riveted in the frame as shown, and the register is'complete. If thelkey shaft be suitably'turned, the threaded blockthereon will move into the position .of

Fig; '2, the link plates will become aligned, the slide will be moved to the .left on plate '3, and the 'louvers opened parallel and at equal distances apart. The air flow is straight. If the vanes, or louvers "be partly opened, the air flow willlconverge and pass straight outwardly in a narrower stream. .The'flow is'thus controlled. It isfheld to be within the purview of this .invention to extend. the key shaft *through the front, an'd'provide a finger piece for turning if desired; As the key shaft is tur ed to move the block to open the register, its .own movement is limited by the stop plate 39 shown in Figs. 1 and '7. The endwise movement of the, shaft is thus prevented, and in the closin ,5m0vement its contrary displacement is prevented by the shoulder '6' against the inside of the flange at the front of the movement plate 3. Having now described this invention and its mode of operation, I'claim: 1

1. In a register, thecombination with a frame,

of vanes operable in the framafa threaded key.

shaft, a threaded block actuated by the key shaft, a movement plate, a slide resting and movable on the movement plate, pivot. pins projecting from'themovement plate, the said slide being providedwith longitudinal slots arranged in engagement Withthe pivot pins, the said slide having projecting vane turning pins, the said vanes having flanges engaging said pivot pins "able on the';rnovement plate, pivot pins project- ,gaging saidtop pivot pins, said top plate being [plate 1 2. Ina register, the combination with'aframe, \o'f vanes operable in the frame, a threaded key shafta threaded block operated by the key shaft, a"movem'ent plate, said movement plate having a front fiangeQa reticulated front plate securedtosaidrflange, a slide resting and mov- 9O "ingfr'om 'themovement plate, said slidebemg provided with longitudinal slots arranged inengagement with said pivot pins, the said slide having projecting vane turning pins, the said vanes having flanges engaging said pivotpins and "provided with lengthwise slots arranged in "engagement 'withjthejturning pins of the slide whereby theiyanesare turned onthe pivot pins ,when the slide is moved on the movement plate means'jfor limiting the lengthwise movement 01" thekey shaft, and link plates pivotally connected with the said block andslide and said movement t l r In a register, the combination with a-frame,

ofvanes operable in the 'frame, said vanes having closed positions wherein eachvane isin touch with "and fat anangle with adjoining vanes, a threaded key shaft, a threaded block actuated by the key shaft, a movement plate, a slidejresting on' and movable on the movement plate, {1:10,

pivot pins projecting from "the movement plate, said slide being provided with longitudinal slots arranged in engagement with the pivotpins, the said slide having projecting vane turning pins, .g

the said evanes having flanges engaging said pivot pins and provided with lengthwise slots arvranged in engagement with the turningpins *of jotally connected with .the; said block and slide.

and movement plate. 7 1 V 4. In-a register, the combination with a frame, of. vanes operable in the frame, a threaded key shaft, a threaded block actuated by the key shaft,

a movement plate, aslide resting and movable upon the movement plate, pivot pinspro'jecting from the movement plate, said slide beingpro-g vided with longitudinal slots arranged inengagev ment with the pivot pins, thesaid lslide having projecting vane turning pins, the said vanes having flangesengaging said pivot pins and provided with lengthwise slots arrangedfin engagement with the turning pins'of the slide whereby the vanesare turned on the pivot pins when the slide is moved on thefmovement'plate, a top plate in the'frame having. downwardly projecting pivot pins, said vanes having portions en r;

movable, springs disposedto press said top plate upon thevanea'means for limiting the endwise movement of the key shaft, and link plates pivotally connected with the said block and slide and movement plate.-

5. In a registerfthe combination with a'frame, oflvanes operable in the frame, the said vanes having closed positions wherein each vane is in touchwith and at an angle with the adjoining11 vanes, a threaded key shaft, a threaded block pins of the slide whereby the vanes are turned on the pivot pins when the slide is moved on the movement plate, a top plate in the frame having downwardly projecting pivot pins, said vanes having portions engaging'said top pivotpins, means for limiting the lengthwise movement of the key shaft, and link plates connected with the said blocl; and slide andmovement plate; 

